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Realization of Closed-Loop Operation of Optical Lattice Clock Based on $^{171}$Yb |
| Hui Liu1,2, Xi Zhang1,2, Kun-Liang Jiang1,2, Jin-Qi Wang1,2, Qiang Zhu1, Zhuan-Xian Xiong1**, Ling-Xiang He1, Bao-Long Lyu1** |
1Key Laboratory of Atomic Frequency Standards, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, wuhan 430071
2University of Chinese Academy of Sciences, Beijing 100049
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| Cite this article: |
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Hui Liu, Xi Zhang, Kun-Liang Jiang et al 2017 Chin. Phys. Lett. 34 020601 |
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Abstract We report the realization of closed-loop operation of an optical lattice clock based on $^{171}$Yb atoms. We interrogate the $^{1}\!S_{0}\rightarrow^{3}\!\!P_{0}$ clock transition using single Rabi pulses of 578 nm laser light. The two $\pi$-transitions from $m_{F}=\pm1/2$ ground states are alternatively interrogated, and the clock laser frequency is locked to the center of the two resonances. The in-loop error signal stability of the clock reaches $3\times10^{-17}$ for an average time of 3500 s. We also perform interleaved operations of the clock with two independent servo loops, and the fractional frequency difference averages down to $2\times10^{-16}$ in 7200 s.
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Received: 28 November 2016
Published: 25 January 2017
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 61227805, 91536104, 11574352, 11274349 and 91636215, and the Strategic Priority Research Program of the Chinese Academy of Sciences under Grant No XDB21030700. |
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